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Tag: "tears" at biology news

Tears reveal some of their deepest secrets to researchers

... no secret why we shed tears. But exactly what our tears are made of has remained a mystery to scientists. ...middle, watery layer ?what we normally think of as tears when we cry ?is sandwiched between a layer of mucus and an outer layer of fatty, oily substances col...

Cigarette smoking impedes tendon-to-bone healing

...arm and stabilize the shoulder joint. Rotator cuff tears involve one or more of the tendons. The injuries are more common as people age and more common in the dominant arm. The true incidence of the injuries is hard to determine because between 5 percent and 40 percent of people who may have a torn rotator...

Chemical 'band-aid' prevents heart failure in mice with muscular dystrophy

.... Our hypothesis was that stretching created small tears or holes in the myocyte membrane, which allowed ca...little ball and die." To test for the presence of tears in myocyte membranes, U-M researchers used a special fluorescent dye, which cannot penetrate an inta...

Study shows humans have ability to track odors, much like bloodhounds

...e onions and ammonia, are stinging enough to bring tears to the eyes. Perhaps, some suggested, von Bekesy's subjects were localizing odors based on trigeminal nerve stimulation, not olfactory nerve stimulation. To eliminate this confusion, Porter and Sobel used two odors with minimal trigeminal stimulatio...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

...ight green parrot snake. In a twinkling, the snake tears a few eggs from the clutch. With that bite, the embryos start to wiggle frantically. As the snake moves to take another morsel, the embryos rupture their egg capsules, drop into the water, and, as tadpoles, swim away to safety -- hatching one to thr...

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